I built a Friend a BBC 496 engine that is using Comp Cams 854 - 16 BBC hyd roller lifters. This engine while running at idle is Very Noisy, lifter's ticking, clattering. I used a dual valve spring that has 170 to 175 lbs on the seat with 420 to 440 lbs open pressure. Did I use to heavy of a spring. I was hoping by now the springs would have soften up a little and the noise would get a little quieter. When I assembled the motor, I used some lifter preload of .025 and used 15 x 40 Shell Rottella oil. This motor is on its second oil change with less than 500 miles on it. Should I change to a heavier oil like 20 - 50, will this help ?

15 W40 is good. Not familiar with the part# but I will say this, If they are short duration lifters your pre-load is probably OK. If NOT, you need to pre-load the lifters to 3/4's of a turn. I have the Morels (4603), my pre-load was 1 full turn. Morels like 3/4 to 1 full turn.

I had a set of 854īs I never used planned themin a project but changed it so sold them. The set I had was the closed Wheel type if yours has closed Wheels the are more like a oem lifter and think your spring pressure is a bit high for them.

I have Morel 4603 in my 489 and is running 175 seat 400+ open, they are loud cold but warm they are pretty quiet. My combo got a bit more quiet when I changed to Crower SS roller rockers from Crane Gold. I Think with a performance cam you have to live with some noise.

I had a set of 854īs I never used planned themin a project but changed it so sold them. The set I had was the closed Wheel type if yours has closed Wheels the are more like a oem lifter and think your spring pressure is a bit high for them.

I have Morel 4603 in my 489 and is running 175 seat 400+ open, they are loud cold but warm they are pretty quiet. My combo got a bit more quiet when I changed to Crower SS roller rockers from Crane Gold. I Think with a performance cam you have to live with some noise.

Marcus

This is the style of lifter being used.
I'm going to check the seat pressure and try more preload. Another question, is this a reboxed Morel lifter, Howard's, etc. Give me a few Days to work on this, I will keep everyone posted.

This is the style of lifter being used.
I'm going to check the seat pressure and try more preload. Another question, is this a reboxed Morel lifter, Howard's, etc. Give me a few Days to work on this, I will keep everyone posted.

I thought you said they where Comps #854 ??? Wouldn't it make sense to call Comp cams then??

I did say they came from Comp Cams. The cam and lifters were reused in the 496 build. They only had a few street miles on them and were reused as per the Customer. Anybody that has been around the engine building or retail parts end of it knows most cam companies "" Do Not Manufacture "" all their components listed in their catalogs ! I was asking if any of the Members here recognize this lifter. Maybe they would know who the manufacture was, maybe spec's, etc, of this style lifter that is "" Re boxed "" by CC.

For the record,, I did call CC back in 2011 and was told it was their own manufactured lifter. The Tech Person I spoke with, agreed with my choice of spring based on how the motor was going to be used.

I did say they came from Comp Cams. The cam and lifters were reused in the 496 build. They only had a few street miles on them and were reused as per the Customer. Anybody that has been around the engine building or retail parts end of it knows most cam companies "" Do Not Manufacture "" all their components listed in their catalogs ! I was asking if any of the Members here recognize this lifter. Maybe they would know who the manufacture was, maybe spec's, etc, of this style lifter that is "" Re boxed "" by CC.

For the record,, I did call CC back in 2011 and was told it was their own manufactured lifter. The Tech Person I spoke with, agreed with my choice of spring based on how the motor was going to be used.

Thanks Again for the replies,

Ron 92Camaro

Ron, Morel manufactures Morels' lifters and I believe they rebadge for Bullit in some applications, but what you have is pure evil. Older Pro Comps. Give the wheel a spin on a few and you will see what I mean by evil. The wheels tend to rock side to side and the bearings out the box feel rough. And that rough smashed rivet holding the wheel on?

I had a customer come in with a nice Comp roller and a set of those Pro Comps on a carry out build. Even though it might have been a 450 horse build, I refused to use them. Every one felt off just by feel.

I would bite the Bullit, so to speak, and have Chris hook you up on a set of Morels.